/*
 * Copyright 2012-2014 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package com.jqd.examples.jpa2.lazy;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.PersistenceContextType;

import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

/**
 * TODO
 * 
 * @author liaozhicheng.cn@gmail.com
 * @date 2013-3-4
 * @since 1.0
 */
@Repository("lazyDAOSupport")
public class LazyDAOSupport {
	
	@PersistenceContext(name = "mysql.persistence", type = PersistenceContextType.TRANSACTION)
	protected EntityManager em;
	
	
	@Transactional(propagation = Propagation.NOT_SUPPORTED, readOnly = true)
	public Class findClass(Integer classId) {
		Class cla = em.find(Class.class, classId);
		return cla;
	}
	
}
